I've just released this package you were looking for. If you're still searching for a solution, please try it out.

https://pub.dev/packages/custom_vimeo_player

Usage

import 'package:custom_vimeo_player/custom_vimeo_player.dart';

CustomVimeoPlayer(
  videoId: '<your_vimeo_id>',
  autoPlay: true
),

If you find it helpful, I would appreciate if you could give it a star. It really motivates me!